Electron-discharge device



Patented Septf13, 1927.

' sufi-Es.

WILLIAM G. HOUSKEEIER, rOF NEW YORK,

N. Y., ASSIGNOR TO WESTERN ELECTRIC COMPANY, INCORPORATED, OF NEW YORK, N. Y., A CORPORATION NEW YORK.`

ELECTRON-IJISCHARGE DEVICE.

- Application filed October 30, 192,2. Serial No. 597,747.

This invention relates to electron discharge devices and pertains especlally to the electrode structure thereof, andits object is an improved grid structure wherein thelateral:

wires are supported in proper space relation on the frame members in aV simple structural arrangement which can be manufactured wLiIt-hout the use of welding operations or the li e.

` According to this invention, these objects are attained by forming coils at intervals Yalonga length of wire and slipping the successive coils over one or more frame mem` bers in rotation to form a grid structure, the

operations being continued until a structurel of the desired length has been formed. The

coils in the wire forming the grid serve to` fasten 'it to the frame members and also in sure accurate and uniformspacing of adjacent lateral members. An advantage of this structure lies in the lfact'that lno welding y operations arel necessary.

Referring now; to the drawings, Fig. 1 dis# closes the wire of .which the grid is to be formed, Ysaid wire having formed therein y, coils at regular'intervals. Fig. 2 Vis a side l rcal electrode.

' regular view of Fig. `l.` pleted grid, the middle portion being broken awaygand Fig. 4 disclosesanelectron discharge device equipped with accorda-ncewith this invention.V Y. f

The'- grid comprises awirefhelix 10 which is supported by a plurality of frame members 11, in this instance, three.` The wire 12y of which y,the helix is formed is provided at lintervals with coils 13 having V4a relatively small .number of turns, `for example, two or three. YThe successivecoils13l embracethe successive framemembers in ro` tation thus forming a substantially cylindril The coils-13 serve to space the adjacent turns and also attach the'helix 11 to the framemembersk thusfavoidingany welding operations.k p Y Y In manufacturing the above jdescribed grid, a length offwire` 12 yis first provided with the coils 13 at predetermined Vintervals as shown in Figs. 1y and 2. Thefrst coil 13 1 is then slipped yover 'the' end offene frame Fig. 3 discloses the comv a grid made inV the second coil'iisV passed over they pushed along the frame members'until a Y `helix of the desired, length 'has been obtained. The electrode is then assembled with a pair of insulating blocks and placed within the vacuum tube as shown in Fio. 4f, the ends of the frame members passing t rough apertures'in the blocks and being attached there- Vtofby nuts as disclosed in my copending application Serial No. 578,292, `filed July 29,

1922, sleeves 0r coils of wire being arranged between the end V'coils on each frame member and the insulating block to A sition the grid and. keep the coi The `invention kclaimed is 1. In' combination, a frame member, a

wire helix supported thereby, and means for 1properly po-y in contact. Y

attaching said helix to Isaid frame member comprising a coil in each turn of the helix, each coil ysurrounding said frame member.`

2.1In combination, a` plurality of frame members, and a wire helix surrounding said fra-me members, said helix being,y provided `at regular intervals with coils surrounding said frame members..v f; Y, Y

V3. VIn combina-tiom'a plurality of frame mem-bers, a wire helixV supported thereby,

Yand means. for spacing the adjacent turns of saidlielix comprising portions of the wire forming said helix. Y' c 4. In combination, a plurality of frame members', and a v'wire helix having portions surrounding said frame members, said portions:serving to .attach .said helix to said y ooVV Vframe members and to space the adjacent turns Yof said helix.

Y 5. In combination, a plurality of frame` members, a plurality of lateral wires, and means for attaching said lateral wires to said frame l,members comprising coils in each of said lateral members, said coils surrounding 'p "said framemembers.vr

"i j@ Af electrode ,for Yf-lectro1-1 diS- charge device comprising u. frame member, :L Wire helix supported thereby, und means integral with said helix surrounding said member to Space adjacent turns of said helix.

T. A grid electrode for an electron discharge device comprising a plurali@T of frame members, a. continuous Wire helix supported thereby, und. means integral with said helix surrounding euch member to Space adjacent turns of said helix.

In Witness whereof, I hereunto subscribe my name this 27th clay of October A. D.

WILLIAM G. HOUSKEEPER. 

